Home Inspection State Practice Exam 2026 - Free Home Inspection Practice Questions and Study Guide

A roof leak is the least likely indication that fiberglass shingles are near the end of their service life because leaks can occur for a variety of reasons that are not solely related to the shingles themselves. For example, a roof leak might result from issues such as flashing problems or improper installation, rather than from the deterioration of the shingles.

In contrast, curled or lifted edges typically signify that the shingles are failing and losing their ability to shed water effectively. Significant granule loss indicates that the shingles are not only aging but also losing their protective outer layer, which is critical for UV protection and waterproofing. Visible discoloration can suggest aging or degradation of the shingles, often tied to their performance and protective qualities. Each of these factors directly correlates with the state of the shingles themselves, making them more reliable indicators of the shingles nearing the end of their service life compared to a roof leak, which may stem from other sources.